Nasopharyngeal Carcinoma Treatment – Prevalence of the reasons for nasopharyngeal carcinoma
① EB virus infection
The results show that, EBV infection is closely associated with nasopharyngeal carcinoma, keratinizing squamous cell carcinoma in most and almost all undifferentiated squamous cell carcinoma are the presence of EBV. Most people around the world are infected in childhood EBV, but only a small number of people after the age of nasopharyngeal carcinoma. EBV pathogenesis is not fully understood. Immune system to control EBV infection and the role of EBV to evade immune response mechanism is the focus of the study. Immune system to control the role of EBV infection achieved primarily through cellular immunity, research shows the in recent years, EBV can infect not only B lymphocytes, but also infection of T and / or NK cells, and produce large amounts of cytokines I.
② Environment and diet
Environmental factors also induced a cause of nasopharyngeal carcinoma in Guangdong found that nasopharyngeal carcinoma high-incidence area of rice and water content of trace elements in low incidence area of nickel higher in NPC patients in the nickel content of hair is also lower the high incidence area. Animal experiments show that: nickel to a promotion of nitrosamine-induced nasopharyngeal carcinoma. Easy access to the life of people are susceptible to formaldehyde in nasopharyngeal carcinoma. Have reported that consumption of salted fish and pickled food is high risk factors of nasopharyngeal carcinoma in southern China, and the age and eating salted fish, eat the amount and duration of the cooking methods.
③ Genetic factors
Nasopharyngeal carcinoma patients and family aggregation of race, such as living in the southern Chinese descendants in other countries still maintained a relatively high incidence of nasopharyngeal cancer, nasopharyngeal carcinoma, suggesting that the disease may be hereditary.
4 unilateral tinnitus
Human nasopharynx and middle ear cavity and eustachian tube connected between the roots, which can adjust the air pressure in the middle ear cavity, tympanic membrane and external pressure to maintain the balance. NPC occurs in the nasopharynx drum pipe opening near the eustachian tube opening pressure cancer, leading to congestion, ringing in the ears of NPC in this reasoning. Thus, if unexplained unilateral tinnitus, especially over the age of 30 men, but also the phenomenon of ear closed, shall be alert NPC
